Furnace



Nov. 7, 1933. F. L. MEYER Et AL FURNACE Filed April 17, 1931 2 Sheets-Sheet l amnion Z'L/Veys W171 5:225:22, E E. M hzv' Nov. 7, 1933.

F. 1.. MEYER Ff" AL 1,933,634

FURNACE Filed April 17, 1931 2 Sheets-Sheet 2 351 1425101, M J.' Baesch, if E.Melzrz'rz gs,

akozmq Patented Nov. 7, 1933 FURNACE Frank L. Meyer, William J .Boesch, and Frank E. Mehrings, Peoria, Ill.

Application April 17, 1931. Serial No. 530,961

2 Claims.

This invention has reference to hot air furnaces for use in heating residences, stores and like places.

Said invention provides for a furnace arrangement wherein the air discharged into the building to be heated is both humidified and cleaned of dust and other suspended matter to the end that healthful conditions may be provided and maintained. Also, that airmay be forced to the rooms to be heated through an air pressure system, and that at a predetermined temperature the power operating the system can be automatically cut off, the air then flowing by the usual gravity method.

While aware that these several advantages have been separately employed they have not been combined and used simultaneously, this being the design of the present system.

In addition, objects are to include with an air pressure system a structure including means for cleaning the air as it is drawn into the system prior to its delivery to the rooms to be heated, and to provide a specific arrangement of said means together with provision for withdrawal of the cleaning parts for renovating them.

Again, an object lies in introducing into a furnace between the body or heating unit, and the outer casing an intermediate bafile arrangement entirely surrounding said body by which radia- 39' tion of heat usually lost through the said casing is prevented.

The appended drawings are provided as an aid Figure 4 is a perspective View of the air filter unit. Figures 5 and 6 are respectively a rear elevation and a sectional elevation of a frame and valves or dampers illustrated in Figures 1 and 4. Figure 7 is a rear elevation of parts shown in Figure 4., parts being removed to show interior details, and Figure 8 is a transverse sec-' tion of a cleaner member and slide therefor.

The outer casing of the furnace as a whole is denoted at 1 while 2 is the usual smoke pipe, and at 3 is the usual cold air return duct. In Figures 1 and 2 there is erected at the rear of the furnace and connected with said cold air duct 3 a box or cabinet i into whose top opens a cold air pipe 5. And it may be stated that 'herein, and in the claims to follow, the cold air its sides are flared,.in this instance, being diduct is considered as including the portion 3 and said cabinet 4, together with said pipe 5.

- Within the said box or cabinet 4 is erected a casing 6 whose rear wall may he the rear wall. of said cabinet for convenience in constructing and using the structure. Said casing 6 termi-v nates at its forward side, or that nearest the furnace, in a constricted opening created by walls 7 lyingwith their ends adjacent a frame '8, for example, lying within the duct 3. Erected in the frame 8 is aseries. of valves or dampers 9, the same being mounted for swinging movement on trunnions 10 at their upper and lower ends which are carried insaid frame 8, see Figures 1, 5 and 6, the upper trunnions lying slightly forward of the position of the lower ones so that said valves will swing open by gravity to positions substantially parallel to eachother and parallel to the line of air flow and in the direction of such flow through the duct. In this instance there are two valves at each side of the duct lying between its outer wall and the wall 7 of the casing 6, the combined width of such valves closing the space between the named portions when lying in the broken line position shown at the bottom of Figure Z'thereby leaving no opening through the said duct other than that between said walls 7.

Within the casing 6 is a housing 11 enclosing a fan 12, such housing being so arranged as to direct air from the fan into the duct 3 toward the-furnace. The fan is mounted on a shaft 13 driven by a pulley 14 thereon and belted to a suitable motor at 1.5 for example. In the top of the casing is an opening 16- closed by a screen 17 in the form of a slide removable through the rear wall of the box 4, a convenient handle 18 being provided for the purpose. -The'casing is. closed at its top except for said opening 16, and

rected outwardly and rearwardly toward the cor- 5 ners of the box and each flaring portion has an opening 19 closed by a screen 20 slidably mounted and withdrawable through the wall of said box, a suitable handle 21 being supplied as in the other instance. Except for the screened openings mentioned, the interior of the casing is entirely cut oif from that part of the duct Within the box 4, the purpose of which will become eviv I dent as the description proceeds. The manner of mounting and guiding the several screens 1'7, 20 is suggested in Figure 8 wherein a channel member 20 acts as a guide for a screen, this being shown, as to position, in Figure 7, and it may be stated that said screens may be made in forced into the duct 3 beyond the-valves, static" pressure is set up whereupon said valves automay be what may be termed cool.

any desired manner and may contain a material such as fiber or other substance that may be kept moistened in any desired way, not shown, or it may be treated with an oil with the purpose of catching and retaining dust and other suspended matter carried in the air-stream. As arranged, it is the purpose that the fan 12 will operate automatically through a suitable switch, not shown, controlled by suitable means including a thermostat located at a desired point, as 22 in Figures 1 and 9.

In practice, the fan assists in circulating the air in the rooms being heated by forcing to the latter the heated air within the furnace casing that might be more or less staticfdepending upon conditions, and serves to maintain a more equable condition of the furnace-body by preventing too great extremes in expansion and contraction thereof, prolonging its usefulness, besides making better use of all of the created heat.

Though not shown, the usual thermostat is employed in the rooms by which to cause the operation of the furnace dampers in acustomary way, the thermostat 22 operating separately therefrom, being affected only by the temperatures of the furnace casing;

As the room temperature rises above a predetermined point due to open dampers at the furnace the thermostat 22 byreason of increased casing-temperature sets the motor '15 in action so that the heat built up within said casing is forced to the room-s, fulfilling theabove purposes,

tinues .inoperation during-an interval thereafter or as long as the furnace gives off suflioient heat tohold said thermostat 22 at a given high point. Contrarywise, as the furnace-heat falls the fan will ceaseto function. However, the intervals of rest of the fan may be comparatively short, being governed primarily by the periodic action of the roomthenmostat. .It is quite evident that the fan will neverbe in'operation when the temperature within the casing is below apoint-where' the air When the fan isidle the air from the rooms flows by gravity through the box 4 the space "between past the valves 9 to the furnace, said valves at such standing open as shown 'in Figure 2. -'However, when the fan is in operation, and the air is matical-lyclose,being held in' that position by such pressure, or as long as the fan is in'operati'on.

through the screens 1'7, 20 and thereby must. be

cleaned] of suspended matter, passing to, and through the furnace and into the rooms inia pure state. When the room temperature is sufficiently highthe motor 15 continues in action-after the furnace dampers are closed, as already intimated, its action terminating only when the furnace temerature has dropped below a given point as set by the thermostat 22. Thereupon, the static pressure ahead of the valves being relieved said valves open by gravity, the air travel being by gravity fiow between the valves as explained. And while the bulk of air willtravel through the path of least resistance some of it may move through the screens, depending, of course, upon the resistance set up thereby. The furnace is provided with any usual water container, as 23, for example, by which the air is kept humidified, which, together with the cleaning of the air, provides healthful conditions while more uniform temperatures are maintained.

We claim:

1. In a structure for use in conditioning air, the combination of an air conducting pipe, a casing enclosed in said pipe, one side of said casing being closed by one of the walls of the pipe, certain of the casing walls being spaced from the other walls of said pipe thereby providing for an air space within the pipe around the named casing walls, the thus spaced walls of the casing each having an opening therein for communication of air in the space of the pipe with that of the casing, there being openings in the walls of the pipe opposite the openings of the casing wallsand. a filtering member insertable in each of the openings of the pipe to overlie the openings in the casing walls, there being an outlet in one of the walls of the casing for the passage of air therefrom, said air passing from the pipe through said filtering members into the casing and thence to said outlet.

2. In structure for use in conditioningair, in combination an air conducting pipe, a casing erected therein, the pipe and casing having separate non-communicating outlets for the delivery of air independently of each other, the casing at one side abutting a wallof the pipe and having walls spaced from the other walls of said pipe, said casing having atop wall including therein an opening lying adjacent the first named'wall, there being an opening in said first named wall adjacent the named opening of the said top wall of the casing and communicating with the passage of the pipe, two opposite walls of the casing each having an opening therein, a filter member insertable through the pipe wall into each. of the named openings and each separately covering an opening, the several filter members being exposed to the space of said pipe, air moving through the pipe being free to enter the casing through the filter members, while free also to out of said pipe through the outlet thereof around and independent of said filter members and-the casing.

' FRANKLMEYER.

FNILLIALI J. BOESCH.

FRANK E. MEHRINGS, 

